Problem Solving-Oriented E-Worksheet To Train Students Metacognitive Skills On Acid-Base Titration Material

- This study aims to obtain the feasibility of problem solving-oriented e-worksheet to train students' metacognitive skills on acid-base titration material in terms of validity, practicality, and effectiveness criteri. This type of research is research and development (R&D). At the product trial stage, it was conducted in a class of Senior High School that consisting of 21 students. Validity was obtained from a validation sheet filled out by 3 validators. Based on the validation sheet in terms of content, presentation, linguistic, and graphical feasibility aspects have a mode score ≥ 3 so that it is declared valid. Practicality was obtained from a response questionnaire filled by 21 students Senior High School. Based on the response questionnaire, the overall practicality level of the developed problem solving-oriented e-worksheet is 89.88% (very good). Effectiveness is obtained from the pretest and posttest of metacognitive skills. Based on the students' metacognitive skills test, the N-gain value was obtained, namely: (1) Planning Skills 0.72, (2) Monitoring Skills 0.73, and (3) Evaluating Skills 0.71. In addition, the data from the skills test results were analyzed using the paired sample t-test of metacognitive skills obtained a sig value. (2-tailed) of 0.000 which can be interpreted that there are differences in the meta-cognitive abilities of students before and after using problem solving-oriented e-worksheet based on the results of validity, practicality, and effectiveness, the e-worksheet developed is said to be feasible.